Evidence for F-/SiO- anion exchange in the framework of As-synthesized all-silica zeolites
KAUST DepartmentKAUST Catalysis Center (KCC)
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AbstractNot everything changes: Charge-compensating anions can be exchanged in as-synthesized zeolite frameworks with changes in both the density of defect sites and of the hydrophobic character of the zeolite. The reversible transformation occurs without dissolution/recrystallization of the zeolite and preserves the size and shape of the crystals (see picture). Fluoride removal is not possible in all-silica D4R units, for which fluoride ions play a structure-directing role. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
SponsorsThis publication is based on work supported by Award No. UK-C0017, made by King Abdullah University of Science and Technology (KAUST).